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What replaces a two-tool stack — and when to keep it

23 keep-vs-replace studies across 20 tools. Each price was checked by hand against the vendor’s own pricing page, most recently Aug 2026. Honest “keep” verdicts are first-class — the same optimizer as the calculator.

How we verify prices · Head-to-head comparisons · Price your whole stack

Every keep-vs-replace study we publish, with the current monthly bill for the pair
StackBill today / moLast verified
ActiveCampaign and Calendly$75Aug 2026
ActiveCampaign and ClickFunnels$256Aug 2026
ActiveCampaign and Unbounce$158Aug 2026
Airtable and Mailchimp$44Aug 2026
Asana and Mailchimp$33.49Aug 2026
Brevo and Calendly$34Aug 2026
Calendly and GoHighLevel$313Aug 2026
Calendly and HubSpot$116Aug 2026
Calendly and Kit$55Aug 2026
Calendly and Mailchimp$36Aug 2026
Calendly and Notion$28Aug 2026
Calendly and Pipedrive$65Aug 2026
Calendly and Systeme.io$33Aug 2026
Calendly and Unbounce$115Aug 2026
ClickFunnels and Kit$236Aug 2026
ClickFunnels and Mailchimp$217Aug 2026
Jotform and Mailchimp$69Aug 2026
Kajabi and Mailchimp$269Aug 2026
Mailchimp and Make$48Aug 2026
Mailchimp and Teachable$109Aug 2026
Mailchimp and Typeform$149Aug 2026
Mailchimp and Unbounce$119Aug 2026
Mailchimp and Zapier$49.99Aug 2026

Tools in these studies